Headphone stand



FIG. 1 is a perspective view of the headphone stand, showing my design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a bottom plan view thereof.

FIG. 4 is a front elevational view thereof.

FIG. 5 is a rear elevational view thereof.

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof.

Regions of the item within the broken lines in FIGS. 1, 2, and 4-7 form no part of the claimed design. 

CLAIM The ornamental design for a headphone stand, as shown and described. 